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one pipe steam radiator problem

johndb
johndb Member Posts: 10
in THE MAIN WALL
problem with vent leaking on steam baseboard original problem was broken vent installed new one 2 weeks later banging in pipes and leaking vent installed main line vent same problem 1 week later removed vent hooked up hose and flushed supply piping to baseboard assuming blockage same problem later that day any suggestions before repiping im lost right now thank you

Comments

  • Muttly
    Muttly Member Posts: 14


    Try turning DOWN the pressure! A one pipe should be set at
    about 8oz to cut out. That is assuming there is a vapor-stat and not a pressuretrol. If you have a pressuretrol
    turn it all the way down.
  • johndb
    johndb Member Posts: 10
    1 pipe steam rad vent problem

    it has a pressuretrol which is turned down rest of system is good no banging or leaking vents
  • Muttly
    Muttly Member Posts: 14


    Is this system ALL one pipe?
  • johndb
    johndb Member Posts: 10


    yes it is and thanks for your help
  • Muttly
    Muttly Member Posts: 14


    My Pleasure...what has changed on this particular rad?
    Did the problem just start or..is it long standing?
  • johndb
    johndb Member Posts: 10
    steam rad vent problem

    its a new problem worked fine for years
  • Muttly
    Muttly Member Posts: 14


    Which of the fine mainline vents did you install?
  • johndb
    johndb Member Posts: 10


    i only installed main line vent on basebord a #75 vent after replacing an adjustable vent
  • Muttly
    Muttly Member Posts: 14


    I think I would look at the SYSTEM mainline vent. Sounds like you only have THAT vent working.
  • johndb
    johndb Member Posts: 10


    if that was the case wouldnt the other radiators be having the same problem
  • Muttly
    Muttly Member Posts: 14


    Maybe...but think like water and steam, you have had your eyes on this system. I have found that by sometimes CLOSING my eyes,I can see better what is happening inside
    the piping.
    A really wise man once said "high pressure goes to low pressure...ALWAYS".
  • johndb
    johndb Member Posts: 10


    no pressure is good in system i believe i have a blockage in piping that i couldnt clear with water and may need to repipe if pressure was problem in 1 pipe system it would affect other radiators i would think
  • Muttly
    Muttly Member Posts: 14


    well..what is the purpose of the vent on the rad?

    What is the purpose of the mainline vent, and where should it be in the system?
  • johndb
    johndb Member Posts: 10


    to remove the air until the steam gets there then close the main line vent is on the return in basement near boiler i am not the homeowner im the plumber trying to fix this i appreciate your help but dont understand why your asking me that question
  • Muttly
    Muttly Member Posts: 14


    Because it serves another purpose too. It allows air back in to the system when the vent cools. This prevents a vacuum from forming. If the mainline vent in the basement is not venting or vacuum breaking, it is possible that the one you installed is doing it for the entire system.
  • johndb
    johndb Member Posts: 10


    i understand that but if that was the problem wouldnt it efect the rest of the system
  • Muttly
    Muttly Member Posts: 14


    Maybe not. Good luck:)
  • johndb
    johndb Member Posts: 10


    ok thank you for your help
  • Muttly
    Muttly Member Posts: 14


    Your welcome.
This discussion has been closed.

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